21381580

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{5717}}^1$

素因数の和:5754

約数の個数: 48

約数和(自身を含む): 51873696

約数和(自身を除く): 30492116

約数列:

[1, 2, 4, 5, 10, 11, 17, 20, 22, 34, 44, 55, 68, 85, 110, 170, 187, 220, 340, 374, 748, 935, 1870, 3740, 5717, 11434, 22868, 28585, 57170, 62887, 97189, 114340, 125774, 194378, 251548, 314435, 388756, 485945, 628870, 971890, 1069079, 1257740, 1943780, 2138158, 4276316, 5345395, 10690790, 21381580]

約数ペア:

[(1, 21381580), (2, 10690790), (4, 5345395), (5, 4276316), (10, 2138158), (11, 1943780), (17, 1257740), (20, 1069079), (22, 971890), (34, 628870), (44, 485945), (55, 388756), (68, 314435), (85, 251548), (110, 194378), (170, 125774), (187, 114340), (220, 97189), (340, 62887), (374, 57170), (748, 28585), (935, 22868), (1870, 11434), (3740, 5717)]